Message 105474 - Python tracker

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Author	matthew.brett
Recipients	matthew.brett, pitrou
Date	2010-05-10.22:30:56
SpamBayes Score	2.0774438e-05
Marked as misclassified	No
Message-id	<[email protected]>
In-reply-to	<[email protected]>

Content
Hi, > Antoine Pitrou <[email protected]> added the comment: > > After a bit of debugging, it seems your data is not actually a complete zlib stream (). What did you generate it with? > > () in technical terms, the zlib never returns Z_STREAM_END when decompressing your data. The decompressobj ignores it, but the top-level decompress() function considers it an error. Thanks for the debugging. The stream comes from within a matlab 'mat' file. I maintain the scipy matlab file readers; the variables within these files are zlib compressed streams. Is there (should there be) a safe and maintained way to allow me to read a stream that does not return Z_STREAM_END?

Hi,

> Antoine Pitrou <[email protected]> added the comment:
>
> After a bit of debugging, it seems your data is not actually a complete zlib stream (*). What did you generate it with?
>
> (*) in technical terms, the zlib never returns Z_STREAM_END when decompressing your data. The decompressobj ignores it, but the top-level decompress() function considers it an error.

Thanks for the debugging.  The stream comes from within a matlab 'mat'
file.  I maintain the scipy matlab file readers; the variables within
these files are zlib compressed streams.

 Is there (should there be) a safe and maintained way to allow me to
read a stream that does not return Z_STREAM_END?

History
Date	User	Action	Args
2010-05-10 22:30:58	matthew.brett	set	recipients: + matthew.brett, pitrou
2010-05-10 22:30:56	matthew.brett	link	issue8672 messages
2010-05-10 22:30:56	matthew.brett	create